/* ===== Crimson Velocity Theme ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --crimson:#dc2626;--crimson-dark:#991b1b;--crimson-light:#fef2f2;
  --steel:#64748b;--steel-dark:#334155;--steel-light:#f1f5f9;
  --blue:#2563eb;--blue-light:#dbeafe;
  --dark:#111827;--darker:#030712;
  --surface:#f9fafb;--surface2:#f1f5f9;
  --white:#ffffff;--text:#1f2937;--text2:#4b5563;--text3:#9ca3af;
  --radius:10px;--radius-lg:16px;--shadow:0 2px 12px rgba(0,0,0,.08);
  --shadow-lg:0 8px 32px rgba(0,0,0,.12);
}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--text);line-height:1.6;background:var(--white)}
img,svg{vertical-align:middle}
a{color:var(--crimson);text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* ===== Navigation ===== */
.v-nav{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:2px solid var(--crimson)}
.v-nav-inner{max-width:1180px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:60px}
.v-brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;color:var(--dark);text-decoration:none}
.v-brand svg{flex-shrink:0}
.v-brand-red{color:var(--crimson)}
.nav-menu{display:flex;align-items:center;gap:4px;list-style:none}
.nav-menu a{padding:8px 16px;border-radius:6px;font-size:14px;font-weight:600;color:var(--text2);transition:.2s}
.nav-menu a:hover{color:var(--crimson);background:var(--crimson-light)}
.nav-menu a.cur{color:var(--white);background:var(--crimson)}
.nav-tog{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-tog span{display:block;width:24px;height:2px;background:var(--dark);border-radius:2px;transition:.3s}
.nav-tog.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-tog.active span:nth-child(2){opacity:0}
.nav-tog.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:8px;font-size:15px;font-weight:700;border:2px solid transparent;cursor:pointer;transition:.25s;text-decoration:none;line-height:1.4}
.btn-crimson{background:var(--crimson);color:#fff;border-color:var(--crimson)}
.btn-crimson:hover{background:var(--crimson-dark);border-color:var(--crimson-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(220,38,38,.35)}
.btn-blue{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-blue:hover{background:#1d4ed8;transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,.35)}
.btn-outline{background:transparent;color:var(--crimson);border-color:var(--crimson)}
.btn-outline:hover{background:var(--crimson);color:#fff}
.btn-white{background:#fff;color:var(--crimson);border-color:#fff}
.btn-white:hover{background:var(--crimson-light);border-color:var(--crimson-light)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-lg{padding:16px 36px;font-size:17px;border-radius:10px}
.btn-sm{padding:8px 18px;font-size:13px}

/* ===== Section Helpers ===== */
.sec{padding:80px 0}
.sec-gray{background:var(--surface)}
.sec-slate{background:var(--surface2)}
.sec-dark{background:var(--dark);color:#fff}
.sec-darker{background:var(--darker);color:#fff}
.sec-crimson{background:linear-gradient(135deg,var(--crimson-dark),var(--crimson));color:#fff}
.sec-hd{text-align:center;margin-bottom:48px}
.sec-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:50px;font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;margin-bottom:16px}
.sec-tag-crimson{background:var(--crimson-light);color:var(--crimson)}
.sec-tag-blue{background:var(--blue-light);color:var(--blue)}
.sec-tag-white{background:rgba(255,255,255,.15);color:#fff}
.sec-tag-steel{background:#f1f5f9;color:var(--steel-dark)}
.tag-dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.sec-title{font-size:36px;font-weight:800;line-height:1.2;margin-bottom:12px}
.sec-title-light{color:#fff}
.sec-sub{font-size:17px;color:var(--text2);max-width:640px;margin:0 auto}
.sec-sub-light{color:rgba(255,255,255,.7)}

/* ===== Hero ===== */
.hero{position:relative;background:var(--darker);color:#fff;padding:100px 0 120px;overflow:hidden}
.hero::after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:80px;background:var(--white);clip-path:polygon(0 60%,100% 0,100% 100%,0 100%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:2}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 18px;border-radius:50px;background:rgba(220,38,38,.2);border:1px solid rgba(220,38,38,.4);font-size:13px;font-weight:600;color:var(--crimson);margin-bottom:20px}
.hero-tag-pulse{width:8px;height:8px;border-radius:50%;background:var(--crimson);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)}}
.hero-h1{font-size:48px;font-weight:900;line-height:1.1;margin-bottom:20px}
.hero-h1 .red{color:var(--crimson)}
.hero-p{font-size:18px;color:rgba(255,255,255,.75);margin-bottom:32px;line-height:1.7}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.hero-trust{display:flex;gap:24px;flex-wrap:wrap}
.hero-trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6)}
.hero-trust-item svg{color:var(--crimson);flex-shrink:0}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-speed{width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(220,38,38,.15),transparent 70%);display:flex;align-items:center;justify-content:center;position:relative}
.hero-speed-ring{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(220,38,38,.2);animation:ringPulse 3s ease-in-out infinite}
.hero-speed-ring:nth-child(2){inset:20px;animation-delay:.5s}
.hero-speed-ring:nth-child(3){inset:40px;animation-delay:1s}
@keyframes ringPulse{0%,100%{opacity:.3;transform:scale(1)}50%{opacity:.8;transform:scale(1.04)}}
.hero-speed-icon{position:relative;z-index:2}
.hero-lines{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none}
.hero-line{position:absolute;height:1px;background:linear-gradient(90deg,transparent,rgba(220,38,38,.3),transparent);animation:lineSweep 4s linear infinite}
.hero-line:nth-child(1){top:20%;width:60%;left:10%;animation-delay:0s}
.hero-line:nth-child(2){top:40%;width:50%;left:30%;animation-delay:1s}
.hero-line:nth-child(3){top:65%;width:70%;left:5%;animation-delay:2s}
.hero-line:nth-child(4){top:85%;width:40%;left:45%;animation-delay:3s}
@keyframes lineSweep{0%{transform:translateX(-100%);opacity:0}50%{opacity:1}100%{transform:translateX(200%);opacity:0}}

/* ===== Metrics Ribbon ===== */
.metrics{background:var(--white);padding:0;position:relative;z-index:5;margin-top:-40px}
.metrics-row{display:flex;justify-content:center;gap:0;background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.metric{flex:1;text-align:center;padding:28px 20px;border-right:1px solid #e5e7eb}
.metric:last-child{border-right:none}
.metric-num{font-size:32px;font-weight:900;background:linear-gradient(135deg,var(--crimson),var(--blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.metric-lbl{font-size:13px;color:var(--text3);font-weight:600;margin-top:4px}

/* ===== Feature Grid ===== */
.feat-hex{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-item{background:var(--white);border-radius:var(--radius-lg);padding:32px 28px;border:1px solid #e5e7eb;transition:.3s;position:relative;overflow:hidden}
.feat-item::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;border-radius:var(--radius-lg) var(--radius-lg) 0 0;transition:.3s}
.feat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feat-item.fi-red::before{background:var(--crimson)}.feat-item.fi-blue::before{background:var(--blue)}
.feat-item.fi-steel::before{background:var(--steel)}.feat-item.fi-teal::before{background:#0d9488}
.feat-item.fi-violet::before{background:#7c3aed}.feat-item.fi-amber::before{background:#d97706}
.feat-item.fi-rose::before{background:#e11d48}.feat-item.fi-emerald::before{background:#059669}
.feat-item.fi-sky::before{background:#0284c7}
.feat-ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.ico-red{background:var(--crimson-light);color:var(--crimson)}
.ico-blue{background:var(--blue-light);color:var(--blue)}
.ico-steel{background:var(--steel-light);color:var(--steel-dark)}
.ico-teal{background:#ccfbf1;color:#0d9488}
.ico-violet{background:#ede9fe;color:#7c3aed}
.ico-amber{background:#fef3c7;color:#d97706}
.ico-rose{background:#ffe4e6;color:#e11d48}
.ico-emerald{background:#d1fae5;color:#059669}
.ico-sky{background:#e0f2fe;color:#0284c7}
.feat-name{font-size:18px;font-weight:700;margin-bottom:8px}
.feat-desc{font-size:14px;color:var(--text2);line-height:1.7}

/* ===== Platform Band ===== */
.plat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.plat-tile{background:var(--white);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;border:1px solid #e5e7eb;transition:.3s}
.plat-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.plat-tile.main{border-color:var(--crimson);background:linear-gradient(135deg,#fef2f2,#fff)}
.plat-flag{display:inline-block;padding:4px 12px;border-radius:50px;font-size:11px;font-weight:700;background:var(--crimson);color:#fff;margin-bottom:12px}
.plat-ico{margin-bottom:12px}
.plat-nm{font-size:18px;font-weight:700;margin-bottom:4px}
.plat-ver{font-size:13px;color:var(--text3)}

/* ===== Deep Showcase ===== */
.show-block{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:64px}
.show-block:last-child{margin-bottom:0}
.show-block.flip .show-text{order:2}
.show-block.flip .show-media{order:1}
.show-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:50px;font-size:12px;font-weight:700;margin-bottom:14px}
.sc-red{background:var(--crimson-light);color:var(--crimson)}
.sc-blue{background:var(--blue-light);color:var(--blue)}
.sc-teal{background:#ccfbf1;color:#0d9488}
.sc-violet{background:#ede9fe;color:#7c3aed}
.show-h3{font-size:26px;font-weight:800;margin-bottom:12px}
.show-desc{font-size:15px;color:var(--text2);line-height:1.7;margin-bottom:20px}
.show-list{list-style:none}
.show-list li{padding:6px 0;font-size:14px;color:var(--text2);display:flex;align-items:flex-start;gap:10px}
.show-list li svg{flex-shrink:0;margin-top:3px;color:var(--crimson)}
.show-visual{background:var(--surface);border-radius:var(--radius-lg);padding:32px;border:1px solid #e5e7eb}
.sv-bar-group{display:flex;flex-direction:column;gap:14px}
.sv-bar-row{display:flex;align-items:center;gap:12px}
.sv-bar-label{font-size:13px;font-weight:600;color:var(--text2);width:80px;flex-shrink:0}
.sv-bar-track{flex:1;height:10px;background:#e5e7eb;border-radius:5px;overflow:hidden}
.sv-bar-fill{height:100%;border-radius:5px;transition:.6s}
.bf-red{background:var(--crimson)}.bf-blue{background:var(--blue)}.bf-teal{background:#0d9488}.bf-violet{background:#7c3aed}
.sv-bar-val{font-size:12px;font-weight:700;color:var(--text);width:36px;text-align:right}
.sv-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
.sv-stat{text-align:center;padding:12px;background:var(--white);border-radius:8px}
.sv-stat-num{font-size:22px;font-weight:800;color:var(--crimson)}
.sv-stat-lbl{font-size:11px;color:var(--text3);font-weight:600}

/* ===== Reviews ===== */
.rev-scroll{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rev-box{background:var(--white);border-radius:var(--radius-lg);padding:28px;border:1px solid #e5e7eb;transition:.3s}
.rev-box:hover{box-shadow:var(--shadow)}
.rev-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-av{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;color:#fff}
.av-r{background:var(--crimson)}.av-b{background:var(--blue)}.av-t{background:#0d9488}
.av-v{background:#7c3aed}.av-a{background:#d97706}.av-s{background:var(--steel)}
.rev-who{flex:1}
.rev-nm{font-size:14px;font-weight:700}
.rev-role{font-size:12px;color:var(--text3)}
.rev-stars{display:flex;gap:2px;color:#f59e0b}
.rev-body{font-size:14px;color:var(--text2);line-height:1.7}

/* ===== Comparison Table ===== */
.cmp-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.cmp-tbl{width:100%;border-collapse:collapse;min-width:600px}
.cmp-tbl th,.cmp-tbl td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid #e5e7eb}
.cmp-tbl thead th{background:var(--dark);color:#fff;font-weight:700;position:sticky;top:0}
.cmp-tbl thead th:first-child{border-radius:var(--radius) 0 0 0}
.cmp-tbl thead th:last-child{border-radius:0 var(--radius) 0 0}
.cmp-tbl tbody tr:hover{background:var(--crimson-light)}
.cmp-hl{background:rgba(220,38,38,.06)!important}
.ck{color:#059669;font-weight:700}.cx{color:#dc2626;font-weight:700}.pt{color:#d97706;font-weight:700}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #e5e7eb;border-radius:var(--radius);margin-bottom:10px;overflow:hidden;transition:.2s}
.faq-item.open{border-color:var(--crimson)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-size:15px;font-weight:600;background:var(--white);transition:.2s}
.faq-q:hover{color:var(--crimson)}
.faq-chevron{width:20px;height:20px;transition:.3s;flex-shrink:0;color:var(--text3)}
.faq-item.open .faq-chevron{transform:rotate(180deg);color:var(--crimson)}
.faq-a{max-height:0;overflow:hidden;transition:.35s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a-inner{padding:0 22px 18px;font-size:14px;color:var(--text2);line-height:1.8}

/* ===== CTA Banner ===== */
.cta-block{text-align:center;padding:64px 40px;border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--darker),var(--dark));color:#fff}
.cta-h2{font-size:32px;font-weight:800;margin-bottom:12px}
.cta-p{font-size:16px;color:rgba(255,255,255,.7);margin-bottom:28px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Download Page ===== */
.dl-hero{background:var(--darker);color:#fff;padding:80px 0 100px;position:relative;overflow:hidden}
.dl-hero::after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:60px;background:var(--surface);clip-path:polygon(0 60%,100% 0,100% 100%,0 100%)}
.dl-hero-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:50px;background:rgba(220,38,38,.2);border:1px solid rgba(220,38,38,.4);font-size:13px;font-weight:600;color:var(--crimson);margin-bottom:18px}
.dl-hero-h1{font-size:40px;font-weight:900;margin-bottom:12px}
.dl-hero-p{font-size:17px;color:rgba(255,255,255,.7)}
.dl-main{margin-top:-40px;position:relative;z-index:5}
.dl-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.dl-card-top{height:6px;background:linear-gradient(90deg,var(--crimson),var(--blue))}
.dl-card-head{display:flex;align-items:center;gap:16px;padding:28px 32px 0}
.dl-card-icon{width:56px;height:56px;background:var(--crimson-light);border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--crimson)}
.dl-card-info{flex:1}
.dl-card-name{font-size:22px;font-weight:800}
.dl-card-meta{font-size:13px;color:var(--text3)}
.dl-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:24px 32px}
.dl-spec{padding:14px;background:var(--surface);border-radius:8px}
.dl-spec-label{font-size:11px;color:var(--text3);font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.dl-spec-val{font-size:15px;font-weight:700;margin-top:4px}
.dl-sec-badge{display:flex;align-items:center;gap:8px;padding:14px 32px;background:#f0fdf4;margin:0;font-size:13px;color:#15803d;font-weight:600}
.dl-card-btns{padding:24px 32px;display:flex;gap:12px;flex-wrap:wrap}
.op-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.op-tile{background:var(--white);border-radius:var(--radius-lg);padding:28px 24px;border:1px solid #e5e7eb;transition:.3s}
.op-tile:hover{box-shadow:var(--shadow)}
.op-ico{margin-bottom:12px}
.op-nm{font-size:17px;font-weight:700;margin-bottom:4px}
.op-ver{font-size:12px;color:var(--text3);margin-bottom:12px}
.op-steps{list-style:none}
.op-steps li{padding:4px 0;font-size:13px;color:var(--text2);display:flex;align-items:flex-start;gap:8px}
.op-step-n{width:20px;height:20px;border-radius:50%;background:var(--crimson-light);color:var(--crimson);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}

/* ===== Guide Section ===== */
.guide-dual{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.guide-col-title{font-size:20px;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.guide-col-dot{width:10px;height:10px;border-radius:50%}
.gcd-red{background:var(--crimson)}.gcd-blue{background:var(--blue)}
.guide-steps{list-style:none}
.gstep{display:flex;gap:16px;margin-bottom:20px}
.gstep-num{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex-shrink:0;color:#fff}
.gn-red{background:var(--crimson)}.gn-blue{background:var(--blue)}
.gstep-body{flex:1}
.gstep-title{font-size:15px;font-weight:700;margin-bottom:4px}
.gstep-desc{font-size:13px;color:var(--text2);line-height:1.7}

/* ===== Requirements ===== */
.req-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.req-card{background:var(--white);border-radius:var(--radius);padding:24px;border:1px solid #e5e7eb;text-align:center}
.req-icon{margin-bottom:10px;color:var(--steel)}
.req-title{font-size:13px;color:var(--text3);font-weight:600;margin-bottom:4px}
.req-val{font-size:15px;font-weight:700}

/* ===== Version Timeline ===== */
.ver-list{max-width:700px;margin:0 auto}
.ver-item{display:flex;gap:20px;margin-bottom:24px}
.ver-dot-col{display:flex;flex-direction:column;align-items:center;flex-shrink:0}
.ver-dot{width:14px;height:14px;border-radius:50%;flex-shrink:0}
.vd-r{background:var(--crimson)}.vd-b{background:var(--blue)}.vd-t{background:#0d9488}.vd-v{background:#7c3aed}.vd-a{background:#d97706}
.ver-line{width:2px;flex:1;background:#e5e7eb;margin-top:4px}
.ver-body{flex:1;padding-bottom:4px}
.ver-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.ver-num{font-size:16px;font-weight:700}
.ver-tag{padding:2px 10px;border-radius:50px;font-size:11px;font-weight:700}
.vt-stable{background:#dcfce7;color:#15803d}
.vt-lts{background:var(--blue-light);color:var(--blue)}
.vt-beta{background:#fef3c7;color:#92400e}
.ver-date{font-size:12px;color:var(--text3);margin-bottom:4px}
.ver-desc{font-size:13px;color:var(--text2);line-height:1.6}

/* ===== Security Banner ===== */
.safe-bar{display:flex;align-items:flex-start;gap:16px;padding:24px 28px;border-radius:var(--radius-lg);background:linear-gradient(135deg,#f0fdf4,#dcfce7);border:1px solid #bbf7d0}
.safe-bar-ico{flex-shrink:0;color:#15803d}
.safe-bar-title{font-size:16px;font-weight:700;color:#15803d;margin-bottom:4px}
.safe-bar-desc{font-size:13px;color:#166534;line-height:1.7}

/* ===== Article Page ===== */
.art-hero{background:var(--darker);color:#fff;padding:80px 0 60px}
.art-hero-crumb{font-size:13px;color:var(--text3);margin-bottom:16px}
.art-hero-crumb a{color:rgba(255,255,255,.6)}
.art-hero-crumb a:hover{color:#fff}
.art-hero-h1{font-size:36px;font-weight:900;margin-bottom:12px}
.art-hero-p{font-size:17px;color:rgba(255,255,255,.7);max-width:700px}
.kw-band{padding:24px 0;background:var(--surface);border-bottom:1px solid #e5e7eb}
.kw-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.kw{padding:6px 16px;border-radius:50px;background:var(--white);border:1px solid #e5e7eb;font-size:13px;color:var(--text2);font-weight:500;transition:.2s}
.kw:hover{border-color:var(--crimson);color:var(--crimson)}
.art-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;padding:48px 0}
.art-body h2{font-size:24px;font-weight:800;margin:32px 0 14px;padding-bottom:10px;border-bottom:2px solid var(--crimson-light)}
.art-body h3{font-size:18px;font-weight:700;margin:24px 0 10px}
.art-body p{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:16px}
.art-body ul,.art-body ol{margin:0 0 16px 20px}
.art-body li{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:6px}
.art-body table{width:100%;border-collapse:collapse;margin:16px 0}
.art-body table th,.art-body table td{padding:10px 14px;border:1px solid #e5e7eb;font-size:14px}
.art-body table th{background:var(--surface);font-weight:700}
.inline-cta{padding:28px;border-radius:var(--radius-lg);margin:32px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}
.ic-red{background:linear-gradient(135deg,#fef2f2,#ffe4e6);border:1px solid #fecdd3}
.ic-blue{background:linear-gradient(135deg,#eff6ff,#dbeafe);border:1px solid #bfdbfe}
.ic-teal{background:linear-gradient(135deg,#f0fdfa,#ccfbf1);border:1px solid #99f6e4}
.inline-cta-body{flex:1}
.inline-cta-title{font-size:17px;font-weight:700;margin-bottom:4px}
.inline-cta-desc{font-size:14px;color:var(--text2)}
.tips-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:20px 0}
.tip-box{padding:20px;border-radius:var(--radius);background:var(--surface);border:1px solid #e5e7eb}
.tip-num{font-size:12px;font-weight:800;color:var(--crimson);margin-bottom:6px}
.tip-title{font-size:15px;font-weight:700;margin-bottom:6px}
.tip-desc{font-size:13px;color:var(--text2);line-height:1.7}

/* ===== Sidebar ===== */
.sidebar{position:sticky;top:80px}
.side-box{background:var(--white);border-radius:var(--radius-lg);padding:24px;border:1px solid #e5e7eb;margin-bottom:20px}
.side-box-title{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid #e5e7eb}
.sdl-btn{display:flex;align-items:center;gap:10px;width:100%;padding:12px;border-radius:8px;border:1px solid #e5e7eb;background:var(--white);font-size:14px;font-weight:600;cursor:pointer;transition:.2s;margin-bottom:8px;color:var(--text)}
.sdl-btn:last-child{margin-bottom:0}
.sdl-btn:hover{border-color:var(--crimson);color:var(--crimson)}
.sdl-btn.primary{background:var(--crimson);color:#fff;border-color:var(--crimson)}
.sdl-btn.primary:hover{background:var(--crimson-dark)}
.sdl-btn-info{flex:1;text-align:left}
.sdl-btn-name{display:block;font-weight:700}
.sdl-btn-ver{display:block;font-size:11px;opacity:.7}
.stoc{list-style:none}
.stoc li{margin-bottom:6px}
.stoc a{font-size:13px;color:var(--text2);display:block;padding:6px 12px;border-radius:6px;border-left:3px solid transparent;transition:.2s}
.stoc a:hover{color:var(--crimson);background:var(--crimson-light);border-color:var(--crimson)}
.side-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.side-stat{text-align:center;padding:12px;background:var(--surface);border-radius:8px}
.side-stat-num{font-size:20px;font-weight:800;color:var(--crimson)}
.side-stat-lbl{font-size:11px;color:var(--text3);font-weight:600}
.side-safe{display:flex;align-items:flex-start;gap:10px;padding:16px;background:#f0fdf4;border-radius:8px;font-size:13px;color:#15803d;line-height:1.6}

/* ===== Footer ===== */
.v-footer{background:var(--darker);color:rgba(255,255,255,.6);padding:40px 0}
.v-footer-inner{max-width:1180px;margin:0 auto;padding:0 20px;text-align:center}
.v-footer-brand{font-size:16px;font-weight:700;color:#fff;margin-bottom:12px}
.v-footer-safe{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:10px;font-size:13px;color:#4ade80}
.v-footer-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.4)}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-btns,.hero-trust{justify-content:center}
  .hero-visual{margin-top:40px}
  .feat-hex{grid-template-columns:repeat(2,1fr)}
  .show-block{grid-template-columns:1fr}
  .show-block.flip .show-text,.show-block.flip .show-media{order:unset}
  .plat-band{grid-template-columns:repeat(2,1fr)}
  .req-grid{grid-template-columns:repeat(2,1fr)}
  .art-layout{grid-template-columns:1fr}
  .sidebar{position:static}
}
@media(max-width:768px){
  .nav-menu{display:none;position:absolute;top:60px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px;box-shadow:var(--shadow-lg);border-top:1px solid #e5e7eb}
  .nav-menu.show{display:flex}
  .nav-tog{display:flex}
  .hero{padding:60px 0 80px}
  .hero-h1{font-size:32px}
  .sec-title{font-size:28px}
  .metrics-row{flex-direction:column}
  .metric{border-right:none;border-bottom:1px solid #e5e7eb}
  .metric:last-child{border-bottom:none}
  .feat-hex,.rev-scroll,.op-grid{grid-template-columns:1fr}
  .plat-band{grid-template-columns:1fr}
  .guide-dual{grid-template-columns:1fr}
  .dl-specs{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr}
  .cmp-tbl{font-size:13px}
  .cmp-tbl th,.cmp-tbl td{padding:10px 12px}
}